Which of the following is an indicator of a chemical reaction? A. two different compounds mixing and remaining seperate.

B. changing states of matter (solid to liquid).

C. decreasing in size.

D. increasing in tempurature​

option . D

Increase in temperature

is an indicator of a chemical reaction

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answer is D

Explanation:

some signs of a chemical change are a change in colour and the formation of bubbles.

the five conditions of chemical change: colour change, formation of precipitate, formation of a gas ,odor change, temperature change.

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pie chart because it is in percents ( % )

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